Regenerative pasteurizing system.



PATENTED JAN. 8, 1907;

A. H. REID. I REGENERATIVE PASTEURIZING SYSTEM.

APPLICATION FILED MAY25,1906.

2 SHEETS-SHEET 1..

No. 840,960. PATENTED JANx 8, 1907.

A. H REID.

RBGENERATIVE PASTEURIZING SYSTEM.

APPLIUATION FILED MAY25,1906.

2 SHEETSSHEET 2.

REGENERATEVE PA$"l'EURlZlN SYSTEM Specification of Letters Patent.

Patented Jan i967.

Application filed May 25.1906. Serial No. 313,677.

To all whom it may courier-n:

Be it known that I, ALBAN H. REID, of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new 5 and useful Improvement in Regenerative Pasteurizing Systems, of which the following is a specification.

This invention relates to the pasteurization and cooling of the pasteurized milk on the regeneratlve system, in which system the inilowing cool raw milk on its way to the pasteurizer is circulated in proximity to the out flowing hot milk from the pasteurizer, with the result that the temperatures of the two currents ten-d by their reciprocal action on each other to equalize, the cool incoming milk being raised in temperature and the hot outgoing milk being reduced in temperature.

The invention consists of an apparatus of improved form for accomplishing this result in a speedy and economical manner, which apparatus comprises as its essential features a series of superposed tubes, through which the incoming milk is circulated, a pasteurizer communicatin with the tubes and receiving the milk thcrelrom, a means for discharging the pasteurized milk onto theexterior of the tubes, whereby in flowing down over the tubes the hot milk will by its proximity to the incoming cool milk flowing through the tubes impart heat thereto and be correspondingly reduced in temperature, with the. result that by reciprocal action the temperature of the incomingmilk will be raised and that of the outflowing milk reduced. v

The invention consists also in combining with the series of superposed tubes through which the incoming raw milk is circulated a series of cooler-tubes arranged beneath the first series in position to receive on their outer surfaces the pasteurized milk "flowing over i the upper series, means being provided for circulating a cooling, medium through the lower series of tubes, whereby the pasteur- 5 ized milk after leavin the upperseries of tubes will be subjects to a further cooling action and its temperature will be quickly reduced to the proper degree.

In the accompanying drawings, Figure 1 is a side elevation, partly in section; of my improved ap aratus. Fig. 2/ is a transverse sectional e evation of the same. Fig. 3 .is a longitudinal sectional elevation, on an enlarged scale, of the two series of tubes, show- 5 ing particularly the form and arrangement of the manifolds at the ends of the series.

. on the floor-level and Referring to thej drawin s, 1. represents a series of horizontally-arranged tub es disposed one over the other and communicating their ends through manifolds 2 and 2* in such manner that the cool incoming raw milk may be circulated in a continuous c urse back and forth throughout the series. The tubes are mounted and sustained at their ends in vertical end plates 3 and e, to which the manifolds are 'detachably connected by lugs 5 on the plates, lugs 6 on the manifolds, and a removable bolt 7 passing through the lugs, so that the manifolds may be detached to permit access to the passages therein and to the interior of the tubes for cleaning the same.

8 represents a second. series of tubes similar in form and arrangement to the first and situated below the same, their ends being sustained in ailownward continuations of the end plates 3 and r and being connected by downward continuations or "the maniiolcls in. such manner that a continuous passage is formed back and forth throughout the tubes for the circulation of the cooling medium, the exterior oi the two senting an upright cooling surface over which the pasteurized milk flows from top to bottom, as will be presently described.

9 represents a receiving-vat for the raw milk to be treated, which vat is connected by. pipe 10 with the lower tube of the upper ries. This vat may be sustained in an elevated position above the tubes in order that the milk may be circulated by gravity through them, but I prefer to sustain the vat on the floor'level and to introduce into the connecting-pipe 9 pump 1 for forcing the milk up into and through the tubes, the uper to. e being extended through the manitold, where it is connected with a discharge-- pipe 11*.

. 12 represents a tank or reservoir for the cooling medium, such as ice-water or brine, which tank in the present instance is situated connected by pipe 13 with the lower tube of the lower series, a pump 14. being introduced in tliie connectingpipe for the purpose of torci f the cooling medium 11 )ward through the tubes, their per one oi which is extended through the manifold and connected; with a returnpipe 1.5.

'lfirepresents a pasteurizer, which may be of any suitable form adapted to subject the .milk to the proper p stei izing process. The

v milk is introduced into the base of the pas--- series of tubes pre lOO teurizer by a, pipe 3 Z and lezrvee the smile by pipe 20, being subjected in its passage there through to o pirateurizing action The pipe 2(7) discharges: the pasteurized milk into :2 receiving-trough 21, arranged above the uper tu be 0E theupper series and formed. in its laottom with openings througlrwhioli the milk lows onto the pipe. The pioe 17, through which the mill; is introduoeil into the posteurizer, is connected. with the discharge pipe 11 so that after the [HilliilOWS through. the upper series it enters the ieeteurizer.

in the operation of my apparatus the raw milk, usually at a temperature of is forced from the receiving-Nat and enters the lower tube oi the upper series, and eiroulet ing upward through the tubes it leaves the some by the ilisi-liargepipe l] being raised in its passage thorethroiigli (by the How of the pasteurized milk over sold tubes) to a temperature of about 140, at which temper-- more it enters the posteurizer by ii ie 17. in the poeteurizor the will; is raiseil W the pesteurizcing motion to wtemperliture oi- :ibout 160 and is discharged by pipe 20 into the reoeiring-trough 21 ot the upper end. of the tubes. The milk from the trough flows downward over the exterior ol the upper series of tulwe Hill thou presses to the exterim of (lo lower series, and is rooeived m the bottom of illd. lower series in. e'trougli 212, through which it. is discharged into a suitable receiving vessel. 'llio llam" oi the pasteurized milk n1 :1. l(HHPPli-tl-lllk! of use over lul'ie u per series of tulw-H iztleee the ti'unpero-ture oi the inroming row mill: llowliag through mill tubes from (30 to 140" Hill in moire spomlingly (-UOlOil, and lap its passage over the low-r males oi l'ulwe ilirougyli whirl; tho voolingg; medium is rim-ulotoll it lfl further voolwl omi (more the receiving: weool'ot about ll)". I

it will be observed tlmt in my iiprmreiue are illustrated mul llesorilmiltlie two series ol' llilws, by being: ermngml one over tlle other, present to the llowiilloo'iug pasteurized milk a. continuous wvolillgwirl zlw, the first portion of the How ol llio hot milk raising tlio term )oroluw ol' tlw ioml i iogg raw milk. rirow all-(l through llu upper clerics ol tubes, and lllv sworn! portion ol the llowol' the pestoub izwl |nilll,-ooi5' ruler-oil in tempera-tore,lioing mllioi'lml to it final ooliz'ig mil ion lay the lower swim-oi tulwo'containing the eirruleb in cooling mmlium. l Y

The 2111ilUlLjlLlilQttpglltlttlliw is mold and ollw-llro, ll-lHl by reason ol tlu' reciprocal sic-- lion ol' the two currents ol'ilill'm'vnt lFHIEKI'fir lures on mull other tho lllUOlHlll milk is ri-llueml in lvinporolurb, resulting in it grout solving of fuel consumption.

The horizontal circularing tulws arranged one iLlHH'l the other, as llvsorllrml, l'orm, in elul roll lztl ingqnismigory e igeeo arranged in the form of'e. flat upright body, through. which olrouletmg-passe es the raw milk eireulati-iol and over whio i body the' peeteurized milk flows.

Having thus described my invention, what 1 claim is-- 1. in e regenerative pesteu 'izin oppw tel superposed tubes, a source of supply for the raw milk, a connection between said milk supply and one end of said. system of tubes, at pasteui'izing epperzitus, a, eonneetion between sold poeteurizing apparatus and. the otliorend of said system of tubes, and means for directing the pasteurized milk from the posteurizer onto the top of the system of tubes mtus, the combination of a series of 'iorizon- :3. in a regenerative pasteurizing system},

the combination ofer upper series of hers. zontel connected tubes arranged one above nested tubes similarly arranged and monjtlie other, a, lower series of horizontal 0011' Y communicating with the first series, means forintroduoin the cold raw milk into'the loWor tube of tlie upFer series, means for disehergmg the milk rem the 'upper tube of soul series, means for introducing a cooling mediruu into the lower tr be of the lower series, means for discharging the cooling me dium from the upper tube of said lower series, a. posteurizer connected with the upper tube of the upper series, and means for dischorg- ,ing the posteui'ized milk onto the top of the upper series of tubes.

3. in a, rogei'ieretive peste'urizing system, the combination oien upper series of horizon tail superposed tubes communicating with each other, as lower sories of horixonml suporposed: tubescommunicating with each other lmt having no eommunioetion with the upper series, the said lower series being or merged 'ertioally beneath tlieuppor series witli'its up we! eml forming on external eontinuetion oi the lower emal of the upper series, line-one for circulating the 1 cold new milk tljirough the upper mm, moons for polite/uriziog; the 'Iilllili after it leaves the mm, means for lowingthe pestourizeil milk dew Word over the external surface of botl seriei oi tubes, end moans foroirenlittiz'ig e oooling medium through the lower series.-

4. in e I wzwrzrtive mstourizin r svetem the combination of the upper series of lioiril zontal e11porposedtuhes commum-looting with each other, 2:. lower :iorios of liorizontzil super posed tubes commuoieeting with each other mm. lowing noeommunimtion with the first, the said lower series being arranged vortieellybeneath the oppor ones with its upper eml forming 2tC(lirtlllllltiiflit0f the lower end ol the upper series, a, sour :o of supply for the raw milk, at commotion lietweoii said milksupply and mm and of said upper series oi" halves, :i'gmst'eurizing apparatus, 2L ronnootion lwl worn soul gmetouriznig apparatus mid the opposite end of the upper series of tubes, a be first reduced in temperature and will inrsource of supply for the cooling medium, a part its heat to the incoming raw mill: and connection between said cooling-rneglium supwill be finally further reduced in temperature ply and one end of the lower series of tubes, a to the proper degree for use.

second connection between the opposite end In testimony whereof I hereunto set iny of the lower series of tubes and the cooling- 1 hand, this 9th day of May, 1906, in the pres medium supply, and means for discharging ence of two attesting Witnesses.

the pasteurized milk onto the top of the up- ALBAN H. REID. per series of tubes; whereby in flowing downward over said upper and lower series of tubes in succession, the pasteurized milk will Witnesses:

W. A. Mouse, MARY E. LOGAN. 

